I wish there was an app for that

Apparently many decades ago some experts believed the usefulness of the Patent Office was winding down, because, they believed, every invention worth inventing had already, well, been invented.
I get the sense that apps are quickly reaching this phase...where the most useful apps have been created and we're just seeing reversioning of Kandy Krush over and over again.

Or are we?

What say you...what problem is looking for an app solution in your world?